A widow maker is an object that can kill men and therfore turn wives into widows.
The 'Widow Maker,' is a bong constructed by my friend Jonny and I by attaching a 3ft hoover pipe to increase chanber size for a bigger hit. This increased hit often left many good men paralised, or in some rare and tragic occasions, dead.
Applies to billiards pool. When the eight ball rests very close to the edge of a pocket, making the next shot more difficult because an eight ball scratch is more likely.
Commonly referred to as a JWM, it involves unleashing a dump in a public bathroom so damaging that were a janitor to attempt to clean it, it would make a widow of his wife, and an orphan of his children.
A variation is the UJWM, which involves a urinal. This is a high-risk move, but a janitorial fatality is pretty much assured if successful.